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Finding the Fourth Proportional to 10,865.53, 14,993.90 and 6,672.97

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Solution

The fourth proportional to 10,865.53, 14,993.90 and 6,672.97 is: 9,208.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.53 : 14,993.90 = 6,672.97 : x
  2. Step 2: Convert to fraction form
    10,865.53/14,993.90 = 6,672.97/x
  3. Step 3: Cross multiply
    10,865.53x = 14,993.90 × 6,672.97
  4. Step 4: Simplify right side
    10,865.53x = 100,053,824.08
  5. Step 5: Solve for x
    x = 100,053,824.08/10,865.53
  6. Step 6: Final answer
    x = 9,208.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.